Valve-spring lifter



P. A. KNIGHT.

VALVE SPRING LIFTER.

APPLICATION FILED SEPT-18, i919.

v1,348,570. Patented Aug. 3, 1920.

asst-er...

PAUL ALBERT smear; or Barnabas; MARYLAND.

varivn-srnrne LIFTER.

ntense;

To aZZiv/wm it may concern Be it known that 1, PAUL A. Amelia, a

citizen of the United States, residing at. Baltimore, in the State ofMaryland, have invented certain new. and usefullmprovements inValve-Spring Lifters; and I do declare the-following to be a full,clear,-and exact description of the invention, such will enable othersskilled. in theart to which it appertains to make and use the same Thisinvention relates to improvements in tools, and it has more particularreference to a valve-spring lifter. It is customary in grindingautomobile valves to employ a tool of some kind to raise the valvespring to permit ease in inserting or removing the usual valve springpin. Various types of tools have been employed for this purpose. Thattype which is generally well known, includes an engine engaging memberhaving a chain connected thereto, and a bar or lever pivotally secured,in some manner, to the free end of the chain. It is at this point ofpivot where the tools now in use are inferior.- In other words, there isgreat liability of the bar slipping with respect to its point of pivotwhich of course makes these types of tools unhandy to use and notentirely effective in use.

It is therefore the object of this inven tion to overcome thesecircumstances, and to provide a valve spring lifting tool in which thereis less liability of the parts slipping.

Another object of the invention is to provide a valve-spring lifterwhich is provided at its opposite ends with means to permit it to beeffectively used with valve stems of difierent thicknesses.

A further object of the invention is to provide a valve spring lifterwhich is extremely simple in construction, strong, durable, ef fectivein operation, easy to manipulate and extremely inexpensive tomanufacture.

Other objects and advantages may become apparent during the course ofthe following description.

In the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is an elevational view of a portion of an engine, illustratingthe manner of using my improved valve-spring lifter.

specifications Letters Patent;

Fig.2 is' an enlarged perspective view of Patented Am. 31, man. IApplication filed. SeptemherlB, 1919. Serial No; s'zaaeo.

principal details of the device as constructed in accordance with myinvention.

Fig. 3 is an inverted perspective-view of the operating lever or bar. bFig- 4 is a top plan view of the operating In the drawings, wherein forthe pur pose of illustration is shown a preferred embodiment of myinvention, the numeral 1 designates a portion of an automobile engine.of the usual construction, from'which my device is suspended andoperatedinthe well known manner. I

.My improved valve spring lifter comprises a flat metal bar 2 which isprovided at its opposite ends with slotted heads 3 which are adapted tostraddle a valve stem. It is to be noted that the slot in one head islarger than the one in the other head, thus permitting the heads tostraddle valve stems of different diameters. Attention is directed atthis point to the fact that the central portion of the bar issubstantially straight while the heads 3 are laterally offset inopposite directions. This construction forms a substantially S-shapedbar which is much more advantageous than the usual straight barsemployed because it will not interfere with the users hands when a valvespring pin is being removed or inserted. Emphasis is to be laid on thisconstructional feature. bar is provided in its under side adjacent theoifset heads with a plurality oflongitudinally spaced grooves at whichserves a purpose to he hereinafter described.

Longitudinally slidable on the lever 2 is a fulcrum member or stirrup 5.As shown,

this stirrup is'preferably triangular in configuration and is bent froma single length of stiff wire. To this end, the opposite ends of thewire are bent laterally in the same direction and converge as at. 6 and7 andthe extremity of the portion 6 is hooked or bent to form an eye 8which sur "ounds the other portion 7. The last named end portion 7 isextended beyond the eye 8 and its extremity bent to form a hook 9 whichis adapted to engage in a link of the chain 10. As before stated, thisstirrup 5 1s slidable or shiftahle along the lever 2 and is adapted tobe seated in one of the transverse grooves 4 whereby a fulcrum for thelever 2 will be had. Employment of this type of stirrup permits the Thebar to be easily slipped out so that it may be.

chain 10 and the stirrup seated in one of i the grooves l in the bar 2which may now be actuated in the well known manner to lift the valvespring.

In the construction set forth it will be seen that when the stirrup 5 isseated or placed in one of the grooves 4 there will be little or nopossibility of the lever 52 slipping lengthwise through it. y

it is to be understood that the form of my invention herein shown anddescribed is y to be taken as a preferredform of the same, and thatvarious changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of the A valve springlifter comprising an eniiu 1,348,570

invention or the scope of the subjoined claim. I

Having thus described my invention, what I clalm 1s:

gine engaging member, a chaincarried by said member, a triangular linkdetachably connected to the free end of said chaima fiat metal barslidable through said link, the intermediate portion of the bar beingstraight'and the ends being enlarged to provide' heads which arelaterally offset in opposite directions and are slotted to permit themto straddle a valve stem, said bar being 40 further provided in itsunderside adjacent the offset ends with a plurality of longitudinallyspaced transverse grooves to permit 7 said link to be seated therein,whereby when one of the slotted heads is permitted to straddle a valvestem beneath the spring and the other end pushed down, the spring willbe lifted.

In testimony whereof I have hereunto set my hand.

PAUL ALBERT KNIGHT.

